UNISONIC TECHNOLOGIES CO., LTD MC34119

LINEAR INTEGRATED CIRCUIT

LOW POWER AUDIO AMPLIFIER SOP-8

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DESCRIPTION

The UTC MC34119 is a low power audio amplifier IC intended for the telephone applications, such as in speakerphones. It provides differential speaker outputs to maximize output swing at low supply voltages. Coupling capacitor to the speaker is not required. Open loop gain is 80dB, and the closed loop gain is set with two external resistors. The Mute pin permits powering down and/or muting the input signal.

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FEATURES

TSSOP-8

* Wide operating supply voltage: VCC=2V~16V * Low quiescent supply current (ICC=2.7mA, typ) * Medium power output over 250mW at VCC=6V, RL=32Ω, THD＜10% * Load impedance range (8Ω~100Ω) * Low total harmonic distortion (0.5% typ) * Mute function (ICC=65µA, typ) * Minimum number of external parts required

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DIP-8

*Pb-free plating product number:MC34119L

ORDERING INFORMATION Ordering Number Normal Lead Free Plating MC34119-D08-T MC34119L-D08-T MC34119-P08-R MC34119L-P08-R MC34119-P08-T MC34119L-P08-T MC34119-S08-R MC34119L-S08-R MC34119-S08-T MC34119L-S08-T

www.unisonic.com.tw Copyright © 2007 Unisonic Technologies Co., Ltd

Package

Packing

DIP-8 TSSOP-8 TSSOP-8 SOP-8 SOP-8

Tube Tape Reel Tube Tape Reel Tube

1 of 8 QW-R107-038,F

MC34119 „

LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

PIN

NAME

1

Mute

2

Ripple Rejection

3

Input(+)

4

Input(-)

5 6 7

Output 1 Vcc GND

8

Output 2

MUTE

1

8

OUT2

RR

2

7

GND

IN +

3

6

VCC

IN

4

5

OUT1

DESCRIPTION This pin can be used to power down the IC to converse power, or for muting, or both. When at a logic “LOW” (less than 0.8V), the IC is enabled for normal operation. When at a logic “HIGH” (2V to Vcc), the IC is disabled. If Mute is open, that is equivalent to a logic “LOW”. A capacitor at this pin increase power supply rejection, and affects turn-on time. This pin can be left open if the capacitor at pin 3 is sufficient. Analog Ground for the amplifiers. A 1µF capacitor at this pin ( with a 5µF capacitor at pin 2) provides 52dB( typ) of power supply rejection. Turn-on time of the circuit is affected by the capacitor on this pin. This pin can be used as an alternative input. Amplifier input. The input capacitor and resistor set low frequency roll-off and input impedance. The feedback resistor is connected between this pin and output 1. Amplifier output 1. The DC level is about (Vcc~0.7V)/2. DC supply voltage is applied to this pin(Vcc=2~16V). Ground pin. Amplifier output 2. This signal is equal in amplitude, but 180°out of phase with that output 1, the DC level is about (Vcc~0.7V)/2.

UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw

2 of 8 QW-R107-038,F

MC34119 „

LINEAR INTEGRATED CIRCUIT

BLOCK DIAGRAM

UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw

3 of 8 QW-R107-038,F

MC34119 „

LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS (Ta=25°C )

PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC -1~+18 V ±250 Output Current IOUT mA Maximum Input, Ripple Rejection, Mute Pin Voltage VIN -1~+1 V Applied Output Voltage (Output Pin When Disabled) VOUT -1~+1 V Junction Temperature TJ +125 °C Operating Temperature TOPR -20 ~ +85 °C Storage Temperature TSTG -40 ~ +150 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.

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RECOMMENDED OPERATION CONDITIONS (Ta=25°C)

PARAMETER Supply Voltage Load Impedance Peak Load Current Differential Gain (5KHz Bandwidth) Voltage at Mute Ambient Temperature

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SYMBOL VCC ZL IL(PEAK) ∆Gv VI(MUTE) Ta

RATINGS 2~16 8~100 ±200

UNIT V Ω mA dB V °C

0~46 0~VCC -20~+70

ELECTRICAL CHARACTERISTICS (VCC=6V, Ta=25°C, unless otherwise specified)

PARAMETER DC PARAMETER

SYMBOL

Operating Current

Output Voltage

ICC

VOUT

Output Offset Voltage Output High Level Output Low Level Input Bias Current

VO(OFF) VOH VOL II(BIAS)

Equivalent Resistance

REQ

AC PARAMETER Open Loop Gain of Amp. 1 Open Loop Gain of Amp. 2

Gv1 Gv2

Output Power

POUT

Total Harmonic Distortion (f=1KHz)

THD

Gain Bandwidth Product

GBW

Power Supply Rejection (VCC=6V, ∆VCC=3V)

RR

Muting

Gv(MUTE)

TEST CONDITIONS VCC=3V, Mute=0.8V VCC=16V, Mute=0.8V VCC=3V, Mute=2V RL=16Ω, R1=75KΩ, VCC=3V RL=16Ω, R1=75KΩ, VCC=6V RL=16Ω, R1=75KΩ, VCC=12V VCC=6V, RF=75KΩ,RL=32Ω 2V